MY-PV ELWA

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Three different models are available.

Each includes control unit and 45cm long 1.5" boss immerssion element. Desired water temperature can be set with a rotary dial.

MY-PV ELWA DC Immersion Heater

For direct connection to a dedicated PV system using 6-8 standard 60 cell modules. The DC current from the photovoltaic modules is controlled with a MPP-Tracker for a maximum power output of the immersion heater (up to 2kW). No connection to a grid supply or inverter is required.

Boost backup-function can use an AC supply to heat water in the event of bad weather (1.7kW).

Advantages
  • Linear power control 0 - 2.000W
  • 100 % self-consumption of solar power
  • No permission for a grid connection required
  • Easy to install, no maintenance costs
  • Easier and cheaper than solar-thermal systems
  • 2 ELWAs enable stratification charge
  • Also works during grid-blackouts
  • Hot-Water securing (Boost-Backup) included
MY-PV ELWA Solar Immersion Heater - Direct DC
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Product Code Description Retail Price
(ex VAT)
ELWA-DC PV Direct DC water heating unit £562.00

MY-PV AC ELWA-E Ethernet Solar Immersion Heater

Communicates via Ethernet for use with battery storage systems or smart-home controllers. PV energy is first used by electric appliances and for battery storage and then the ELWA-AC-E minimises exported power by diverting to water heating.

Advantages
  • AC ELWA-E uses energy that cannot be stored in the battery
  • Linear power control 0 - 3.000W for maximum self-consumption
  • The AC ELWA-E communicates via ethernet with the BMS
  • Sinusoidal current consumption (no thyristor), grid compliant
  • Hot-Water securing (Boost-Backup) included
  • Suitable for a wide range of battery and energy-management-systems
MY-PV AC ELWA-E Solar Immersion Heater - Smart
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Product Code Description Retail Price
(ex VAT)
ELWA-AC-E PV AC water heating unit - Ethernet £562.00

MY-PV AC ELWA-F Frequency Responsive Solar Immersion Heater

For use in off-grid systems to use surplus energy once a battery has become fully charged.

The ELWA-AC-F detects frequency rise of the inverter, if there is excess energy available and uses it for heating water.

Advantages
  • AC ELWA-F uses energy that cannot be stored in the battery
  • Linear power control 0 - 3.000W for maximum self-consumption
  • The AC ELWA-F needs no communication cables to the inverter
  • Sinusoidal current consumption (no thyristor)
  • For AC off-grid systems with frequency-shift inverters eg. Sunny Island & Victron
MY-PV AC ELWA-F Solar Immersion Heater - Frequency Responsive
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Product Code Description Retail Price
(ex VAT)
ELWA-AC-F PV AC water heating unit - frequency controlled £562.00